/ Dictionary / Index L luteinizing hormone: Meaning and Definition of Find definitions for: lu'teinizing hor"mone Pronunciation: [key] — Biochem. Biochem. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. luteinize lutenist Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language